I have a two-node vSAN 6.7U2 cluster I setup with a witness appliance running on a separate vSAN cluster that I'm doing some testing on, using HCIBench to generate load. Every time I run a 100% write workload, I get a PSOD on the witness appliance, and it kills the capacity drive on the appliance. It's 100% repeatable. Has anyone else seen this, or know how to tune/fix it? This is a fairly high performance configuration, hitting about 15-20K write IOPS per node, so perhaps the writes are somehow overpowering the storage layer, causing the failure. This is my first time doing performance testing with the witness appliance, so any insight would be helpful. I've run numerous other tests on 4-node clusters without the appliance and have never had an issue like this.
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